// = 赋值号（变量赋值使用）
let i = 6
console.log(i)
console.log("i", 'i', `数字：${i}。`)

let sql = "select * from aa"
console.log(sql)

// == 判断两个变量的值是不是相同
let a = '123'
let b = 123
console.log(a, b, a == b)

// === 判断变量的值 和 类型同不是相同
console.log(a, b, a === b)

// => 箭头函数 在java中是 ->
let ss = (a, b) => a + b

function pp(a, b) {
    return a + b
}

console.log(ss(6, 9), pp(6, 9))
